Ignition Systems - 1

20 Questions | By Atahcpss | Last updated: Mar 22, 2022 | Total Attempts: 3492

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Chapter 47

Questions and Answers

1.

Ignition coils are basically:
- A.
  
  Step-down transformers.
- B.
  
  Step-up transformers.
- C.
  
  Ballast resistors.
- D.
  
  Switching transistors.
2.

A high-voltage spark must cross the spark plug electrode as the piston approaches top dead center (TDC) of the
- A.
  
  Exhaust stroke.
- B.
  
  Ignition stroke.
- C.
  
  Intake stroke.
- D.
  
  Compression stroke.
3.

When the driver turns the key to the start position, an electrical connection is made between the vehicle battery and the ____________ of the ignition coil.
- A.
  
  Secondary winding
- B.
  
  Ballast resistor
- C.
  
  Primary winding
- D.
  
  Distributor
4.

The type of ignition system in which two cylinders share one coils is called a:
- A.
  
  Distributor ignition system.
- B.
  
  Waste spark ignition system.
- C.
  
  Coil-on plug ignition system.
- D.
  
  None of the above
5.

Most vehicles today use the _________ type of ignition system.
- A.
  
  Coil-on-plug
- B.
  
  Waste spark
- C.
  
  Breakerless
- D.
  
  Distributor
6.

The component the ignition system uses to convert low voltage and high current into high voltage and low current is called the:
- A.
  
  Ballast resistor.
- B.
  
  Advance mechanism.
- C.
  
  Condenser.
- D.
  
  Induction coil.
7.

The collapse of the magnetic field inside the ignition coil happens as a result of the interruption of current to the:
- A.
  
  Primary winding.
- B.
  
  Secondary winding.
- C.
  
  Ignition control module.
- D.
  
  Electronic control module (ECM).
8.

The amount of voltage needed to initially get the spark to jump the spark plug gap is called the:
- A.
  
  Available voltage.
- B.
  
  Required voltage.
- C.
  
  Induced voltage.
- D.
  
  None of the above
9.

As engine rpm increases, the ignition timing must:
- A.
  
  Retard.
- B.
  
  Advance.
- C.
  
  Remain the same.
- D.
  
  Remain the same and then retard.
10.

The primary winding of the ignition coil has approximately _______ turns of enameled copper wire.
- A.
  
  A few hundred
- B.
  
  1,000
- C.
  
  15,000
- D.
  
  None of the above
11.

The hottest part of the spark plug is the:
- A.
  
  Ground electrode.
- B.
  
  Insulator.
- C.
  
  Center electrode.
- D.
  
  Metal shell.
12.

The pattern in which a lab scope shows all the cylinders firing in sequence is called the:
- A.
  
  Parade pattern.
- B.
  
  Raster pattern.
- C.
  
  Spark line.
- D.
  
  Firing line.
13.

Tech A says that a defective crankshaft or camshaft position sensor can prevent an engine from starting. Tech B says that if a diagnostic trouble code (DTC) indicates a problem with the crankshaft or camshaft position sensor, you will always have to replace the sensor. Who is correct?
- A.
  
  Tech A
- B.
  
  Tech B
- C.
  
  Both Techs A and B
- D.
  
  Neither Tech A nor B
14.

Tech A says that you can test for defective ignition wires by using a spray bottle and water. Tech B says that you can test for defective ignition wires with a grounded test lead. Who is correct?
- A.
  
  Tech A
- B.
  
  Tech B
- C.
  
  Both Techs A and B
- D.
  
  Neither Tech A nor B
15.

Tech A says that you can test the ignition coil with an ohmmeter. Tech B says you can't test the ignition coil with an oscilloscope. Who is correct?
- A.
  
  Tech A
- B.
  
  Tech B
- C.
  
  Both Techs A and B
- D.
  
  Neither Tech A nor B
16.

Tech A says that the crankshaft sensor is used to determine vehicle speed. Tech B says the cam sensor is used to control fuel pump speed. Who is correct?
- A.
  
  Tech A
- B.
  
  Tech B
- C.
  
  Both Techs A and B
- D.
  
  Neither Tech A nor B
17.

Tech A says that a Hall-effect sensor can be used in an electronic ignition system. Tech B says that an optical-type sensor can be used in an electronic ignition system. Who is correct?
- A.
  
  Tech A
- B.
  
  Tech B
- C.
  
  Both Techs A and B
- D.
  
  Neither Tech A nor B
18.

Tech A says that ignition coils are essentially transformers. Tech B says that the primary side of the coil delivers the high voltage spark that is necessary to jump the plug gap. Who is correct?
- A.
  
  Tech A
- B.
  
  Tech B
- C.
  
  Both Techs A and B
- D.
  
  Neither Tech A nor B
19.

Tech A says that a secondary ignition shock is enough to kill you. Tech B says that a secondary ignition shock does not have enough current to kill you. Who is correct?
- A.
  
  Tech A
- B.
  
  Tech B
- C.
  
  Both Techs A and B
- D.
  
  Neither Tech A nor B
20.

Tech A says that it is easiest to set the spark plug gap on all the plugs at one time. Tech B says that spark plugs come pre-gapped and you should never have to check spark plug gap. Who is correct?
- A.
  
  Tech A
- B.
  
  Tech B
- C.
  
  Both Techs A and B
- D.
  
  Neither Tech A nor B